NULL Pointer Dereference Affecting platform-python package, versions <0:3.6.8-15.1.el8


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    1.72% (89th percentile)

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  • Snyk ID SNYK-RHEL8-PLATFORMPYTHON-3563074
  • published 26 Jul 2021
  • disclosed 15 Jan 2019

How to fix?

Upgrade RHEL:8 platform-python to version 0:3.6.8-15.1.el8 or higher.
This issue was patched in RHSA-2019:3520.

NVD Description

Note: Versions mentioned in the description apply only to the upstream platform-python package and not the platform-python package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An exploitable denial-of-service vulnerability exists in the X509 certificate parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.

CVSS Scores

version 3.1
Expand this section

NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High